It's a balance between cost and efficiency, creativity and time. Some things just make life a whole lot easier, and nipple waterers for chickens seem like one of those technological improvements that will make chores a little more productive. Dad recently added 300 Plymouth Rock laying pullets to the brooder, and to supply them with fresh water, he inserted special nipple valves into a PVC pipe that is gravity fed from a five gallon pail of clean water. When the chicks peck at the droplet of water hanging on the valve of the nipple, the valve releases more water into their beak. In no time at all they had figured it out. Now you can step inside the brooder and hear the clicking of beaks on the valves all day long.